Sieve.



UNITED STATES PATENT OFFICE.

J ULIJ AN CIHALE'WSKI, OF CHICAGO, ILLINOIS, ASSIGNOR TO J. CIHALEI SKIFARM MILL MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

SIEVE.

Specicaton of Letters Patent.

Patented Oct. 10, 1905.

Application filed December 29, 1904. Serial NoA 238,717.

To all whom it may concern.'

Be it known that I, JULIJAN CIHALEwsKi, a subject of the Emperor ofAustria-Hungary, residing at Chicag'o, in the county of Cook and Stateof Illinois,have invented certain new and useful Improvements in Sieves,of which the following is a specification.

My invention relates to certain new and useful improvements in sieves;and its object is to produce a device of this class which shall havecertain advantages which will appear more fully and at large in thecourse of this specification.

To this end my invention consists in certain novel features which areshown in the accompanying drawings as embodied in my preferred form ofconstruction.

In the aforesaid drawings, Figure l is a view, partly in plan and partlyin horizontal section, the line of section being indicated at linel l ofFigQ; and Fig. 2 is a vertical longitudinal section taken in the line 22 of Fig. 1 looking' in the direction of the arrow.

In the views, A represents a standard in which is journaled a shaft B, athrust-bearing b being provided at the lower end of the standard toreceive the shaft. A pulley 7J is mounted upon the shaft by means ofwhich the sieve is operated. Eccentrically disposed with reference tothe shaft B is a crank-shaft B', which extends through a sleeve of thesieve proper and gives it its gyroscopic action. The framework of thissieve consists in a cylindrical casing C, having a bottom c and aremovable top c', bolted thereto by means of bolts c2. To the bottom ofthe casing are secured two flexible arms D, which converge toward eachother and are connected by a block (l, which is slotted to receive a pine, extending upward from a standard E. The rotation of the shaft B willgyrate the sieve, the arms D preventing its rotation upon the shaft.

l/Vithin the casing C are a series of false bottoms F F F3, each ofwhich is provided with an opening f, 4through which the grain or mealmay run out onto the sieve below. Between these false bottoms are sievesG G Gr2 Gr3 Gi, the uppermost sieve G being of very coarse mesh, thelowest one of fine mesh, and the ones in between graduating from thecoarsest to the finest mesh. In each sieve is an opening g, connectedwith a flexible tube g', adapted to conduct the coarser parts away whichdo not sift through the sieve, so that from each sieve the coarsematerial will be separated and carried away into suitable receptaclestherefor.

H represents the inlet-pipe through which the material is fed to thesieve, and H a table through which the outlet-tubes pass.

I I IZI3 are radially-extending arms lying above the sieves, theportions of which extend almost to the false bottoms above, and theportions a" of which are narrower' than the portions z', therebyaffording a restricted passage from one side of the arm to the other.

Upon the false bottoms are laid cubes R, of rubber or other likematerial, which roll around in the meal and bump against the sieves, soas to agitate or jolt them.

The device is used for separating grain or meal, and the operation is asfollows: The grain flows in through the inlet H onto the sieve G. whereit is shaken through the gyration of the sieve, and the finer particlespass through the sieve, which is of course the coarsest one of theseries, while part of the mass which flows onto the sieve works its waythrough the restricted passages formed by the arms I I/ I2 until thecoarser portions which are unable to pass through the sieve reach theopening' g and pass out through the tube g and into any suitablereceptacle provided therefor. The mass which has passed through thefinest sieve shakes around upon the bottom F and eventually passesthrough the opening f therein and onto the sieve G', which is a finersieve than the sieve G, andthe operation at this point is exactly as itwas in the sieve above, the coarser stufl` passing out through theopening g in the sieve and out through outlet-tubes. In this waydifferent grades of grain or meal are separated from each other and passout through the 0utlettubes, the coarsest passing out from the uppermostsieve and the finest from the lowest sieve.

I realize that considerable variation is possible in the details of thisconstruction without departing' from the spirit of the invention, and Itherefore do not intend to limit myself to the specific form hereinshown and described.

IOO

I claim as new and desire to secure by Letters Patentl. In a device ofthe class described, the combination with a standard, of a verticalshaft journaled therein, a separating-sieve ecoentrically mounted uponsaid shaft, sieves of varying mesh graduating from a coarse mesh at thetop to a fine mesh at the bottom supported in said sieve, means forconducting the coarser material away from each sieve, aradially-extending guiding-arm and a guide upon which the end of saidarm is guided.

2. In a device of the Class described, the combination with a standard,of a vertical shaft journaled therein, a separating-sieve eccentricallymounted upon said shaft, sieves of varying mesh graduating from a coarsemesh at the top to a fine mesh at the bottom supported in said sieve,means for conducting the coarser material away from each sieve, aradially-extending arm provided with a slot in its end and a standardhaving a pin entering the slot and adapted to guide the movement of thearm.

3. In a device of the class described, the combination with a standard,of a vertical shaft journaled therein, a separating-sieve eccentricallymounted upon said shaft, sieves of varying mesh graduating from a coarsemesh at the top to a line mesh at the bottom supported in said sieve,means for conducting the coarser material away from each sieve, aradially-extending iexible arm provided With a slot in its end and astandard having a pin running in said slot and adapted to guide themovement of said arm.

- In Witness whereof I have signed the above application for LettersPatent, at Chicago, in the county of Cook and State of Illinois, this27th day of December, A. D. 1904.

JULIJAN CIHALEWSKI. itnessesz GEO. M. MAYER, CHAs. O. SHERVEY.

